Skip the auto shop - Our mechanics make house calls

Q: Car not running good

asked by on

Car misfires no power check engine light on its reading codes.p0174 and p0453

A: Hello. Codes P0174 and P0453 are for the e...

Hello. Codes P0174 and P0453 are for the engine management and emissions systems. P0174 is the trouble code for a lean condition on engine bank 2. A lean condition occurs when the vehicle air fuel mixture is lacking in fuel, creating an inefficient mixture that will not only result in reduced power and efficiency, but can even potentially harm the engine if detonation occurs. This likely the reason for your performance issues, and can be caused by many things. A few common causes are a faulty injector, fuel pressure regulator, or oxygen sensor. Code P0453 is the trouble code for a high input from the EVAP system pressure sensor. The EVAP system is an emissions system that collects fumes from the fuel tank, and reroutes them into the engine for consumption. The system uses a sensor to detect pressure, and will set off this code if it detects an excessively high reading. This is usually caused by a faulty sensor, or an issue with the EVAP system’s purge valve. As these sorts of issues can sometimes be difficult to diagnose, I would recommend having a professional technician, such as one from YourMechanic, come to your location to diagnose the exact causes of the engine light, and performance issues.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.